Structure Molecular Weight (g/mol) Melting point (0C) Solubility Hazard Sulfuric acid (H2SO4) 98.079 10 Miscible in water Hazardous in case of eye contact (irritant)‚ of ingestion‚ of inhalation. Slightly hazardous in case of skin contact (irritant) Ammonium Bromide (NH4Br) 97.94 452 Soluble in water Hazardous in case of eye contact (irritant)‚ of ingestion‚ of inhalation. 1-Butanol (C4H10O) 74.12 -89.8 Soluble in water. Very soluble in acetone‚ miscible with ethanol‚ ethyl ether Very hazardous
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happen through precipations‚ temperature changes‚ gas evolution or changes in solutions’ colors. In some cases when no changes happen‚ it is considered no reactions occur. Some general rules: 1 Most nitrate salts are soluble 2 Most salts containing the alkali metal ions and the ammonium ion are soluble 3 Most chloride are soluble in water except AgCl‚ PbCl2‚ Hg2Cl2 4 Most compounds containing sulphate are soluble in water‚ except BaSO4‚ PbSO4‚ CaSO4 5 Most compounds containing OH- ion
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Energy Flow Robert Green 1/9/15 SCI/275 Christina Kamnikar Energy Flow After reviewing figure 4-10 presented in chapter 4 of Environmental Science‚ it is easy to recognize the different trophic levels. Each trophic level shows how energy and biomass flow through a food chain however it is eventually lost as heat. These levels consist of: biomass of producers‚ those consumed‚ and those not consumed. The first trophic level has the producers which graze the food chain‚ grazers consist of the
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carbon from the decaying bodies or waste into the atmosphere. Without them‚ it won’t be able for any organism to access the carbon stored in dead bodies. In the nitrogen cycle‚ decomposing bacteria breaks down animal waste‚ which creates ammonia and nitrate products rich in nitrogen. Although no animals or plants cannot directly use all the nitrogen found in the atmosphere‚ such form of nitrogen created by the bacteria is useful for plants to use again. 2. What are producers? Producers are organisms
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WORKSHEET MOLE By Sir Shah Murtaza Q1. Potassium reacts with water as shown in the equation. a. Describe what you would see when potassium reacts with water. b. A sample of 0.195 g of potassium was added to 500 cm3 of cold water. When the reaction was finished‚ 100 cm3 of 0.100mol/dm3 hydrochloric acid was added to form solution X. (i) Calculate the number of moles of hydroxide ions formed when the potassium was added to water. (ii) Calculate the
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For the seventh experiment we will be performing different type of test to see how different chemical react with each other. The first experiment will be a demonstration the professor will give to the class. the first experiment you will be performing will include a test tube you will add a couple drops of dilute hydrochloric. you will add this to five little pieces of zinc metal. In next experiment you will performed you will put 2 ml of 3% hydrogen peroxide solution in a test tube .you will also
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Grade 11 Research task: Chemistry Endothermic and Exothermic reactions A chemical reaction is a process in which one or more substances are chemically changed into one or more new substances. A chemical reaction may involve the motion of electrons in the forming and breaking of chemical bonds. Therefore when a chemical reaction takes place‚ energy is transferred to‚ or from‚ the environment. A Chemical reaction can either be exothermic or endothermic. Exothermic Reactions During an Exothermic
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This lab is an opportunity to observe‚ study‚ and learn about ecosystems and how the environment sustains life but in a much simpler and smaller scale which is called Eco Columns. The environmental conditions in the Eco Column could sustain life for several weeks‚ therefore over the course of the several weeks we will observe and study the interconnections between each ecosystems. A self sustaining requires components such as energy flow and chemical cycle. This experiment will evaluate our knowledge
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SYLLABUS Cambridge O Level Chemistry 5070 For examination in June and November 2014 University of Cambridge International Examinations retains the copyright on all its publications. Registered Centres are permitted to copy material from this booklet for their own internal use. However‚ we cannot give permission to Centres to photocopy any material that is acknowledged to a third party even for internal use within a Centre. © University of Cambridge International Examinations 2011 Contents
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the plot‚ remove all grass‚ weeds‚ vines‚ and any other wild grass that needs to be remove. Then you have the fertilization of the plot. There are many different methods of fertilizing a garden. The most common of them are organic fertilizer‚ ammonium nitrate‚ and triple thirteen. My suggestion to you as a farmer my self is to use the triple thirteen. It is the best out of the three to start out with. The next step in the gardening process is to select the type of seeds that you would like to plant
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